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Put down you pitchforks Reddit, this one likely isn't on Samsung. That's clearly an aftermarket extended battery cover for the phone, a cover that likely included a shitty Chinese "extended" battery. You can tell pretty easily that its aftermarket by the deep rut in the back of the case where the phones LED flash peeks through.

Its quite clear that the battery that's in the phone when its photographed is not visibly damaged or where the heat came from. What you can see is some form of battery or wireless charger built into a non Samsung back case which is burnt and mangled. This is where the fault is.
Edit: Good job tracking down a good match for the extended battery used.

I think that the aftermarket battery OP's friend used was actually two regular cells, put in parallel, and re-wrapped into a large capacity battery. Looks like one of the two cells went faulty and blew up.

If its a shitty quality battery the pouch can rupture, and if the thermal event occurring in the battery is powerful enough it can start venting scalding hot gas out the rupture, melting and potentially igniting nearby material.

Wasn't there just some big, controversial story about a guy who's Galaxy phone went up in flames similar to this and he started going all over the web and in public because Samsung or whoever refused to replace it at first? I think there was even a statement at the end that the company said they'd replace it or give him an upgrade if he stopped bashing their name.

My brother had an S3. One day he set it down and came back to it and it wouldn't turn on. He sent it to Samsung and they sent it back to us claiming that he had damaged the phone somehow. Customer support couldn't tell him exactly how it was damaged. They said he might have been pressing the screen too hard or that maybe it was water damage.

When they sent the phone back to him (unfixed) it came back with giant cracks in the screen. There were no cracks in the screen when it was sent to them....

T-mobile sent me a box that was delivered from Samsung..... it had my new phone in it. Same model and color, and they said to send the old one back in that box. All I paid was 5 dollars in shipping, and all that was broken was the proximity sensor.

The Windows Phone Store has more than 200,000 apps. In comparison, Play Store had just over 1,000,000 in July 2013, and the App Store has just over 1,000,000. Sure, off by a factor of 5, but 200,000 surely isn't "nothing."

Ya I have a Nokia lumia 920. Best phone Ive had. Better than an iPhone and android IMO. Only thing lacking is the app store. It has great First party apps from Nokia that I think are better than what apple and Google offer. Third Party apps they are missing a lot of major ones. Sadly thats the main factor in the Phone War and thats the app store.

He has had this "happen" to at least 2 other phones on that YT channel alone. I remember there being more, though. He's obviously causing them intentionally or there is something incredibly wrong when he charges his phones. Each time he tried to make big shit storm and get money from the companies. No such luck so far.

It was a controversy because they would only offer a replacement if he signed a contract saying he wouldn't talk about it and had to remove his videos on it. Also not to come to them if he has any other issues.

They asked him to send the phone back in for an evaluation and they will replace it. They also said to take down the video or they will sue him. (Because it was very popular and it was most likely his fault it burst into flames.)

Wouldn't have been that hard to do a proper response to his case. With all the publicity it could have actually helped their brand because if they proved it was a 3rd party battery he was using then they could be like "This is what happens when you buy 3rd party, remember to buy genuine Samsung products".

I always figured they were more of a ''We take responsibility for our mistakes

You're kidding, right? My new Samsung camera battery kept running out after less than 24 hours. I tried a half dozen times to contact Samsung, via phone, Twitter, web, and e-mail. The two out of the six times I was able to get a response, they said I had to remove the battery to prevent the behavior. So they make cameras that can't withstand having a battery in them. F*ck Samsung.

My ex had that problem, she took it back to place of purchase, they gave her a new one. Six months later the battery was getting too hot, she took it back, they gave her a new one.
Consumer laws Australia.

I can see why Samsung would ask people not to post things like this. They would cause a huge panic and can cause a huge backlash from customers if people saw what happened in one phone out of millions that Samsung has made.

Think about how rare it is that you see a phone catch fire like this, and people are so quick to blame samsung, even though the problem could lay elsewhere. Is it fair to samsung that they take the blame over a user having a faulty 3rd party battery, as could be the cases

I work for a battery company and used to be our cell-phone battery buyer. I have a google news alert for just this kind of thing. This is the third or fourth Samsung battery fire I've come across in the last year or so. In all cases, they were OEM batteries.

Every now and then I think there's just a problem with the battery. My brother's phone (during the flip-phone time period) did the same thing and almost melted/exploded. Course, his was beat to hell, so I think that battery trauma might be a possible cause of a fail-safe failure.

My oven will not go below 200. It makes me sad. I think the toaster over will though. But you have to make sure to pre-heat those, the elements that close will still melt things while heating it up.
Edit: Hearing oven

My wife has had a Galaxy S 4g and although it never exploded like this the stock battery overheated and warped the battery to where we had to get a new one or else it wouldn't hold a charge. T-Mobile told us we were best off getting an aftermarket one and it did the same thing. So, although anecdotal, it doesn't seem like a new problem to me

The number of phones on the market, they are only THE LARGEST mobile device manufacturer in the world. Compared to apple, they hold nearly 4x the market share.

As an example, if samsung has 100,000,000 phones and 10 of them light on fire. Thats a 0.00001% failure rate on the batteries failsafes. Assuming the fault in every case lay on the manufacturing and not the user/environment.

If lets say apple has 25,000,000 phones (close based on market share) and has the same failure rate you would see 2.5 that burnt.

Motorola with 8,000,000 devices would have .8 of them light on fire. Or none.

Put these up on a chart excluding the failure rate and market share and you have something that "clearly" points to samsung as being many times worse than the other manufacturers for "battery burning".

Well put. No company in existence can guarantee a 0.0% failure rate no matter how much quality assurance testing or prototyping they do, especially in electronics where there are so many minute, unexpected environmental factors that could affect systems performance.

Actually they replace pretty much every product for free if you're under warranty and you didn't break it yourself (drop it in water, break the screen, accidental stuff, etc). A lot of times out of warranty. I know you're joking but I thought I'd just let people know if they have a broken device or something. Useful info.

Lithium Ion batteries make me worry a bit. It's always in the back of my mind that one day when I'm out of my apartment, one of my many devices that use a Lithium Ion will explode and burn my place down.

Also, I NEVER leave anything with a Lithium Ion battery in my car while it's parked when it's hot outside.

My S3 started to do this while it was charging. I was able to catch it (due to the burning smell, the fact that it notified me the battery level was low while it was charging, and that I couldn't touch the lower portion of the device). It still functions, but something melted or was damaged in the USB interface and I cannot use the USB any longer, so I am now using third party batteries to continue using it. I don't see any reason for it to have happened, it just did. I haven't bothered to contact Samsung since I assume they won't even respond (out of warranty). I am unsure whether I'd be willing to go back to Samsung after this.

I have a friend who had this exact same thing happen to him with the same phone. They replaced it free and they told him to not leave it on charge overnight.

Rechargeable batteries/charging systems have had overcharging failsafes since they were introduced. In 2014 what kind of piece of shit company makes a phone that will burn your house down if you leave it plugged in for too long?

They aren't any more likely to explode than any other electronic device. There's a huge myth that they are super dangerous. The only ones I've seen explode are ones that people try to modify and push the batteries way beyond their amp limit. Its kind of like over clocking a CPU and having it fry.

This seriously worries me. My phone got ridiculously hot yesterday, it would have burned me had it been in my pocket. Sooner or later these overheating bastards are going to burn down a home or even worse an apartment building.

There are some defective batches of Samsung galaxy s4 batteries - they are prone to overheating and swelling, and obviously burning since there are a few known cases of this happening! They are genuine Samsung batteries as well - they really should have done a recall.

Got mine replaced by Samsung because of this - luckily I caught it happening when it just started swelling! It made my back cover pop off.

Hey i saw another post of this on here a few months ago. A lot of these have problems. You should watch both videos to see what to do about it because apparently the guy that posted this had a letter sent to him by samsung saying they would only replace the phone once and from there on if it happened again they would not replace it. And I'm not sure if they would do that to you but they wanted him to sign a contract saying a few things.